Malicious PDF — malware analysis report

Static analysis result for SHA-256 4020d057e2b9fa47…

MALICIOUS

PDF

42.6 KB Authoring application: SWFTools
MD5: a6947b2b3dcab7b5ac6a405cabb5d554 SHA-1: 7bd29abf8546d80c76b4c70400e899c465201df6 SHA-256: 4020d057e2b9fa475ee4e0d554244c70d6e8b187c28623e64713fa38ce058758
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm of 24 external PDF files, masquerading as a free file conversion tool. The primary heuristic indicates a 'PDF_SEO_LINK_FARM' with a dominant host of 'dreamdanceschool.net'. The ML classifier and ClamAV detection strongly support a malicious classification, specifically 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The embedded URLs are likely used to distribute further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://dreamdanceschool.net/uploads/1/3/0/2/130270917/vureludobo.pdf
    • http://stonelakecounseling.com/uploads/1/3/0/2/130289205/gotizoxopivinu_pafuji_tinebemoza_budokexalum.pdf
    • http://sailingholidaygroup.com/uploads/1/3/0/5/130543483/wifok-mepamuvamu.pdf
    • http://74-123-76-150.mgwnet.com/uploads/1/3/0/5/130588509/derumuron_topoxeviged_mafisi.pdf
    • http://markeyforcongress.com/uploads/1/3/0/8/130873923/671e3a100.pdf
    • http://syncopatedance.com/uploads/1/3/0/7/130775308/jojuje.pdf
    • http://cforcinema.org/uploads/1/3/0/2/130289365/gagazawosoxalowi.pdf
    • http://gayology.com/uploads/1/3/0/5/130590724/gexoninojogej-pofimemu.pdf
    • http://jay-lassiter.com/uploads/1/3/0/8/130814126/vamowobejakesojuf.pdf
    • http://mycrawfordcleaning.com/uploads/1/3/0/6/130604638/ligodabomapa.pdf
    • http://idahousapl.com/uploads/1/3/0/7/130739810/zerumowojojo.pdf
    • http://accessiblehearingsolutions.com/uploads/1/3/0/5/130551671/b5f04eb61232.pdf
    • http://www.braquitelecancer.com/uploads/1/3/0/6/130622104/7056593.pdf
    • http://saphyr29.com/uploads/1/3/0/7/130775603/mupikagowogazar.pdf
    • http://schildersverenigingnederland.com/uploads/1/3/0/6/130640022/243d513.pdf
    • http://fitfoodsexpress.com/uploads/1/3/0/2/130271126/3589289.pdf
    • http://coachabrahams.com/uploads/1/3/0/4/130477048/3792662.pdf
    • http://scoooper.eu/uploads/1/3/0/9/130969884/4577150.pdf
    • http://hatsforheroines.com/uploads/1/3/0/5/130546354/gedopa-nifil-pagub-doneme.pdf
    • http://goodnightlycastle.com/uploads/1/3/0/3/130379429/pigesitux-nuwem.pdf
    • http://blogfixation.com/uploads/1/3/0/6/130604533/fixijasanonapajotip.pdf
    • http://hostmaster.omarpistamiglio.com/uploads/1/3/0/3/130323362/8962042.pdf
    • http://andreasclothing.com/uploads/1/3/0/6/130639327/42d791f6.pdf
    • http://pilgrimwithabackpack.com/uploads/1/3/0/7/130776159/xinebabudag.pdf
    • http://apiondemand.com/uploads/1/3/0/7/130775522/130775522.html#convert+pdf+file+to+autocad+dwg

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004169.bin
4925cc4835f7ee3c72e3c4daba9dbc387017aedb61a82d5135594b6eef3194f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4169 8560 bytes

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